CN216715559U - Double-sealing rotary compensator - Google Patents
Double-sealing rotary compensator Download PDFInfo
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- CN216715559U CN216715559U CN202220237252.6U CN202220237252U CN216715559U CN 216715559 U CN216715559 U CN 216715559U CN 202220237252 U CN202220237252 U CN 202220237252U CN 216715559 U CN216715559 U CN 216715559U
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- sealing
- outer tube
- rotary compensator
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- pressing sleeve
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Abstract
A double-sealing rotary compensator is used for compensating expansion with heat and contraction with cold of a pipeline. The composite packing structure comprises an outer pipe (3) with a variable diameter structure, an inner pipe (10) inserted into the outer pipe, a first sealing packing (4) arranged between the outer pipe and the inner pipe, a composite pressing sleeve (7) tightly presses the first sealing packing, a cylinder body extends rightwards from the end face of the right end of the composite pressing sleeve, a second sealing packing (8) arranged between the cylinder body and the inner pipe, and a pressing sleeve (9) tightly presses the second sealing packing. The invention is characterized in that a first sealing filler and a second sealing filler are arranged in the rotary compensator, the composite pressing sleeve is firstly pressed against the first sealing filler, the first sealing filler bears friction, and after the sealing is failed, the pressing sleeve (9) is pressed against the second sealing filler. Compared with a rotary compensator only provided with a single sealing filler, the service life of the rotary compensator can be doubled, the shutdown maintenance frequency of a pipeline can be greatly reduced, and the operation efficiency of the pipeline is improved.
Description
Technical Field
The invention relates to a rotary compensator which is used for compensating expansion caused by heat and contraction caused by cold of a pipeline.
Background
The structure of a rotary compensator generally comprises: the sealing filler is arranged between the outer pipe and the inner pipe. When in use, the rotary compensator is welded in the pipeline in series. When the pipeline stretches, the inner pipe and the outer pipe rotate mutually to rub the sealing filler, the sealing filler is abraded after the pipeline is used for a period of time, the sealing performance is reduced, and the rotary compensator needs to be stopped and replaced. If the service life of the rotary compensator is prolonged, the shutdown period can be prolonged, and the running efficiency of the pipeline is improved.
Disclosure of Invention
The invention aims to provide a double-seal rotary compensator which is long in service life and capable of reducing the times of pipeline shutdown and maintenance.
The technical scheme includes that the double-seal rotary compensator comprises an outer pipe 3 with a diameter-variable structure and an inner pipe 10 inserted into the outer pipe, a first sealing filler 4 is arranged between the outer pipe and the inner pipe, the left end of the first sealing filler is attached to the diameter-variable surface of the outer pipe, a pressure head part 5 at the left end of a composite pressure sleeve 7 is attached to the right end of the first sealing filler, a sealing ring 6 is arranged between the outer circle of the pressure head part 5 and the inner circle of the outer pipe, and a flange on the outer pipe is connected with a flange on the composite pressure sleeve through a bolt.
The invention is characterized in that a first sealing filler and a second sealing filler are arranged in the rotary compensator, the composite pressing sleeve is firstly used for pressing the first sealing filler, the first sealing filler bears friction, and the pressing sleeve 9 is used for pressing the second sealing filler after the sealing of the first sealing filler fails. Compared with a rotary compensator only provided with a single sealing filler, the service life of the rotary compensator can be doubled, the shutdown maintenance frequency of a pipeline can be greatly reduced, and the operation efficiency of the pipeline is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The figures are numbered: 1-connecting pipe, 2-guide ring, 3-outer pipe, 4-first sealing filler, 5-pressing head, 6-sealing ring, 7-composite pressing sleeve, 8-second sealing filler, 9-pressing sleeve and 10-inner pipe.
Detailed Description
Specific embodiments of the present invention will now be described with reference to the accompanying drawings.
The utility model provides a double containment rotary compensator, it includes reducing structure's outer tube 3, the left end of outer tube passes through the reducing surface and is connected with takeover 1, the external diameter of takeover equals with the inner tube, inner tube 10 is inserted in the outer tube, be equipped with first seal filler 4 between outer tube and the inner tube, the left end of first seal filler pastes with the reducing surface of outer tube, the pressure head portion 5 of 7 left ends of compound pressure cover is inserted between outer tube and inner tube, pressure head portion 5 is hugged closely with first seal filler right-hand member, be equipped with sealing washer 6 between the excircle of pressure head portion 5 and the interior circle of outer tube, flange and compound pressure on the outer tube overlap the flange and pass through bolted connection, the moment of torsion bolt can compress tightly first seal filler.
A cylinder extends rightwards from the end face of the right end of the composite pressing sleeve 7, the inner diameter of the cylinder is equal to that of the outer pipe, a second sealing filler 8 is arranged between the cylinder and the inner pipe, the second sealing filler is attached to a pressing head of the pressing sleeve 9, a flange on the cylinder is connected with a flange on the pressing sleeve 9 through a bolt, and the second sealing filler can be tightly pressed by screwing the bolt.
The double-seal rotary compensator is connected in series in a pipeline, the inner pipe rotates relative to the outer pipe when the pipeline expands and contracts, at the beginning, the pressing force of the first seal packing is larger than that of the second seal packing, the first seal packing bears the sealing function, the second seal packing does not bear the sealing function, and when the first seal packing loses the sealing performance after being worn, the pressing force of the second seal packing can be increased to enable the second seal packing to bear the sealing function. This improves the service life.
A guide ring 2 is arranged between the first sealing filler and the diameter-changing surface of the outer pipe, the guide ring has a certain thickness, the left end of the inner pipe is located in the inner circle of the guide ring, and a gap is reserved between the left end of the inner pipe and the diameter-changing surface. Therefore, friction between the inner pipe and the variable diameter surface can be prevented, and the first sealing filler is kept closed and is prevented from being washed by the pipeline fluid.
Claims (2)
1. The utility model provides a double containment rotary compensator, it includes outer tube (3) of reducing structure, inner tube (10) inserted in the outer tube, be equipped with first sealed filler (4) between outer tube and the inner tube, the left end of first sealed filler pastes with the reducing face of outer tube mutually, pressure head portion (5) and the first sealed filler right-hand member of pressing cover (7) left end are hugged closely to the complex, be equipped with sealing washer (6) between the excircle of pressure head portion (5) and the interior circle of outer tube, flange and the complex on the outer tube press the cover flange to pass through bolted connection, characterized by, extend a barrel on the terminal surface of complex pressure cover (7) right-hand member, the internal diameter and the outer tube internal diameter of barrel equal, be equipped with second sealed filler (8) between barrel and inner tube, second sealed filler pastes with the pressure head portion that presses cover (9), flange and the flange on the barrel pass through bolted connection on the pressure cover (9).
2. The dual seal rotary compensator of claim 1, wherein a guide ring (2) is provided between the first seal packing and the variable diameter surface of the outer tube, the left end of the inner tube is located in the inner circle of the guide ring, and a gap is left between the left end of the inner tube and the variable diameter surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237252.6U CN216715559U (en) | 2022-01-28 | 2022-01-28 | Double-sealing rotary compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237252.6U CN216715559U (en) | 2022-01-28 | 2022-01-28 | Double-sealing rotary compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715559U true CN216715559U (en) | 2022-06-10 |
Family
ID=81874150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220237252.6U Active CN216715559U (en) | 2022-01-28 | 2022-01-28 | Double-sealing rotary compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715559U (en) |
-
2022
- 2022-01-28 CN CN202220237252.6U patent/CN216715559U/en active Active
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